Acta Metallurgica Sinica (English Letters) ›› 2000, Vol. 13 ›› Issue (1): 75-79.
BACKGROUND RECTIFICATION AND FEATURE EXTRACTION OF IMAGE IN A SPOT WELD OF AL ALLOY X-RAY DETECTION
T.Gang;J.Zhang ;M.B.Zhang and F.X.Liu (1)AWPT National Key.,HIT,Harbin 15001,China 2)State 159 Factory,China)
BACKGROUND RECTIFICATION AND FEATURE EXTRACTION OF IMAGE IN A SPOT WELD OF AL ALLOY X-RAY DETECTION
T.Gang;J.Zhang ;M.B.Zhang and F.X.Liu (1)AWPT National Key.,HIT,Harbin 15001,China 2)State 159 Factory,China)
摘要： 1. ~nonklundnum alloy sPOt welding is widely used in the structtires for aircraft and spaceflight,the nondestmctive testing for qUality of sPOt weld is genewhy caacced out by detector opticallyand with X -- ray radiography. Such a method can not satisfy the demand of efficiency and reliability in Production. It has been shown that the introduction of image processing and pattern recognition i....